OK i was lookin over my last dyno chart that i have and all it shows is speed and hp. so for those of you with h23's i need to know your rpm in 4th gear for speed 45-85 in 5mph incriments. i would just go out and drive my car around and find out for myself but it's still in the shop.

 

ttt

 

I'd help but I know that my speedometer is off from my tires... Look for a gearing calculator and plug in numbers from the FAQ page.

I found this using a search engine looks promising:

http://www.f-body.org/gears/

Pirate